Adyton Resources drills 24 m of 0.51% Cu at Feni Island

Mr. Tim Crossley reports ADYTON REPORTS FINAL ASSAYS FROM FENI DRILLHOLES 1-3 CONFIRMING MULTIPLE COPPER MINERALISED ZONES, COMPLEMENTING PREVIOUSLY REPORTED GOLD; FDD003 UPGRADED BY 40% FOR COMBINED 125.9 GXM (AU.EQ) Adyton Resources Corp. has released new copper assays and confirmed final gold assays from its first three diamond drill holes at the Feni Island gold-copper (Au-Cu) project. The results confirm multiple zones of copper mineralization complementing previously reported gold intercepts. The company also provides an update on its continuing 2025 drilling program. Highlights: Hole FDD003 returned strong copper mineralization (complementing previous gold), including: 24 metres (m) at 0.51 per cent copper (Cu), five m at 0.48 per cent Cu and 12 m at 0.23 per cent Cu. The previously reported FDD003 significant intercept now has a grade increase to 1.36 grams per tonne (g/t) gold equivalent (AuEq) over 81 m (for 109.8 gxm), with multiple significant intercepts now resulting in FDD003 for a combined 125.9 gxm AuEq (a 40-per-cent upgrade from the initial gold-only 90 gxm). Each of the three Feni Island drill holes now report more than 100 g-m on an AuEq basis. The return of copper assays, particularly coherent zones at more than 0.5 per cent Cu, within gold mineralized intervals (more than one g/t Au), is highly encouraging and provides strong potential for a future upgrade to the mineral resource estimate (MRE). Since the July 21, 2025 news release, an additional 1,064 m of drilling have been completed. Tim Crossley, chief executive officer, commented: "We are very encouraged that the first three drill holes of this program are all reporting greater than 100 g-m AuEq basis. The addition of the copper assays reinforces our view that the Feni Au-Cu asset contains strong potential for significant copper mineralization, alongside the previously reported gold." Dr. Chris Bowden, chief operating officer and chief geologist, commented: "To have the results from the first three drill holes from a new drill program all return more than 100 g-m AuEq highlights the geological robustness of the Feni project. Whilst Feni shares many geological similarities with Lihir, it also contains a significant copper component to the mineralization, which, to date, has never been included in any MRE. This is only the beginning for Feni, and we look forward to keeping the market updated as future gold and copper assay results are received." Significant intercepts and geology Table 1 shows the significant intercepts for gold and copper assay results received to date for the first three drill holes. Table 2 provides a summary of the current status of the Feni drill program. Quality assurance/quality control (QA/QC) Adyton adheres to industry-recognized standards of best practice and QA/QC. Drill core samples were submitted in batches to Intertek Laboratory in Lae, including a field blank, certified reference materials (CRMs) and staged duplicates. Samples were sealed using single-use tie-locks ensuring chain of custody. To date, all batches have passed QA/QC, and blanks and CRMs were within acceptable tolerance limits. All drill holes were drilled and sampled predominantly from PQ- and/or HQ-diameter drill core (noting some drilling and upcoming sampling will be on NQ core). Core recovery is considered to be appropriate. Feni Island gold-copper asset, on-trend location to giant gold-plus-or-minus-copper mines The Adyton Feni Island Au-Cu project is strategically located on the easily accessible Bismark Islands in Papua New Guinea (PNG). Feni Island is part of the 250-kilometre-long (km) Tabar-Lihir-Tanga-Feni Island chain, which to the northwest hosts the operating gold mines of Simberi and the giant Lihir mine, while Feni hosts a foundational resource of 1.45 million ounces (oz) gold (Au). To the southeast of Feni Island, on Bougainville Island, lies the giant past producing Panguna Cu-Au mine. About Adyton Resources Corp. Adyton is focused on the exploration and development of gold and copper resources in regions with high potential for Tier 1 discoveries. The company has a portfolio of highly prospective mineral exploration and development projects in PNG, where it is focused on expansionary drilling on its 100-per-cent-controlled 1.46 million oz Au Feni Island Au-Cu asset. This drilling is also focused on documenting the copper endowment that has previously been unassayed for. The company also has a joint venture (JV) on the Fergusson Island Au project, also in PNG. The mineral exploration projects are located on the Pacific Ring of Fire on easy-to-access island locations, hosting several globally significant copper and gold deposits, including the Lihir gold mine and Panguna copper/gold mine on Bougainville Island, both neighbouring projects to the company's Feni Island project. Feni Island Au-Cu project The Feni Island project has an MRE, prepared in accordance with National Instrument 43-101 (Oct. 14, 2021), which has outlined an initial inferred mineral resource of 60.4 million tonnes (t) averaging 0.75 g/t Au, for contained gold of 1.46 million oz Au (cut-off grade of 0.5 g/t Au). See the NI 43-101 technical report, entitled "NI 43-101 Technical Report on the Feni Gold-Copper Property, New Ireland Province, Papua New Guinea," prepared for Adyton Resources by Mark Berry (MAIG), Simon Tear (MIGI, PGeo), Matthew White (MAIG) and Andy Thomas (MAIG), each an independent mining consultant and qualified person, as defined in NI 43-101, available under Adyton's profile on SEDAR+. Mineral resources are not mineral reserves and have not demonstrated economic viability. Fergusson Island Au project The Fergusson Island Au project has an MRE, prepared in accordance with NI 43-101, dated Oct. 14, 2021, which outlined an indicated mineral resource of 4.0 million t at an average grade of 1.33 g/t Au for contained gold of 173,000 oz Au and an inferred mineral resource of 16.3 million t at an average grade of 1.02 g/t Au for contained gold of 540,000 oz Au. See the technical report, entitled "NI 43-101 Technical Report on the Fergusson Gold Property, Milne Bay Province, Papua New Guinea," prepared for Adyton Resources by Mr. Berry, Mr. Tear, Mr. White and Mr. Thomas, each an independent mining consultant and qualified person as defined in NI 43-101, available under the company's profile on SEDAR+. Mineral resources are not mineral reserves and have not demonstrated economic viability. Qualified person The scientific and technical information contained in this news release has been prepared, reviewed and approved by Dr. Chris Bowden, PhD, GCMEE, FAusIMM (CP), FSEG, the chief operating officer and chief geologist of Adyton, who is a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. We seek Safe Harbor.